package com.cloud.util.net;

import javax.servlet.http.HttpServletRequest;

/**
 * 网络工具类
 * @author gaof
 * @date 2016年12月24日
 */
public class NetUtil {

	/**
	 * 获取request的ip地址
	 * @param request
	 * @return
	 */
	public static String getRemoteHost(HttpServletRequest request) {
		
		String ip = request.getHeader("x-forwarded-for");
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getHeader("WL-Proxy-Client-IP");
		}
		if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
			ip = request.getRemoteAddr();
		}
		
		return ip.equals("0:0:0:0:0:0:0:1") ? "127.0.0.1" : ip;
	}
	
}
